Metal door.



' P; E. HEGSTE'DTY.

METAL DOOR.

APPLICATION FILED JAN. 30, I914.

Patented Sept. 14, 1915.

2 SHEEIS-SHEET 1.

.Z/VVENTOR MTIVESSE'S %44& 172

A TY'OXNEY P. E. HEGSTEDT.

METAL DOOR.

APPLICATION FII ED JAN. 30, NM.

Patented Sept-14, 1915,

2 SHEETS-SHEET '2.

Add

ATTORACEY TEN @TATlEh PATENT @llilFlQh.

FEEDER EDWARD HEGSTEDT, OF JAMESTOWN, NEW YORK.

METAL noon.

Specification of Letters Patent.

Patented Sept. Ml, 19155.

Continuation in part of application Serial No. 775,906, filed June 26, 1913. This application filed January 80, 1914. Serial No. 815,566.

To all whom it may concern:

Be it known that T, PETER EDWARD Huc- S'IEDT, a citizen of the United States, of America, and a resident of the city of Jamestown, county of Chautauqua, and State of New York, have invented certain new and useful Improvements in Metal Doors, of which the following is a full, clear, and exact description.

My invention relates generally to metallic doors and like sheet metal structures and more particularly to fire-proof doors.

The general object ofmy invention has been to provide a metallic door, the parts of which may be separately painted, japanned or otherwise protected and prevented from rust or corrosion both on the inside and outside before assemblingn Another object has been to provide a door which may be easily and quickly assembled and in such a manner that the paint, japan or other protective covering will not be burned oil or any parts of the metal door buckled or bent due to the application of heat, which results when the door parts are welded together. Moreover. after. my door is assembled there are no holes to be filled with solder, putty or other filler. Thus the assembled door presents a very neat finish. Another object has been to provide a door in which the molding or other ornamentation shall be made integral with stiles and cross rails and to otherwise reduce the number of parts used in the completed door.

, Reference is to be had to the accompanying drawings forming part of this specification, in which like characters of reference in- I dicate like parts throughout the several views, of which:

Figure lie-an isometrical perspective view of my door partly assembled and showing portions thereof in section. Fig. 2 is an isometrical perspective view of the panels of my door partly assembled. Fig. 3 is a fragmentary sectional view through one of,

the cross rails taken on line 3-3 of Fig. 1. Fig. 4 is an isometrical perspective view of one of the clamp hooks used in my door.

Fig. 5 is a fragmentary sectional view simi-' lar to Fig. 3 and is taken through one of the cross rails of a modified form of construction. a

Referring to the drawings and more particularly to Figs. 1 and 2, 10 and 11 are the panels of my door, each of which is made of one single piece of material. inch of these panels is provided along near its edges 'ivith a plurality of slots 12 which extend at right angles with the edge of the panel. These panels are also provided with similar slots 12 across the central portion or directly beneath thecross rail oi: the door. 13 are the clamp hooks of my device, each of which is provided with a' central separator lug-1 and on each side of said lug with a clamp prong 15, thusforming parallel slots 16. A. separator 17 is also provided at the opposite end of the hook and at the outer end thereof is provided a U-shaped clamp 18. The clamp prongs 15 of one of the hooks 13 are inserted ,1n each pair of registering slots 12 in the panels 10 and 11, with the U-shaped clamp '18 extending beyond the edge of the panels.

stiles of my door and 21 and 22 are the upper and lower cross rails respectively. 23, 23 are the central cross rails of, my door. The stiles 19 and 20 and upper and lower cross rails 21 and 22, respectively, are each formed preferably of one piece of material, bent so as to form a hollow rectangular body, having the desired molding or other ornamentation .37 formed at the inner edges thereof.- Extending inwardly from the molding 37 is. an edge portion 38 which lies substahtiallyl parallel to'the sides of the cross rails orlstiles and which form a return bend. The top and bottom cross rails are provided at each end on each side'with flanges 2 1 which areloent at right angles withthe rails. The central cross rails 23 are 'each "formed with the molding along their edges and are also provided at their ends with right-angled flanges 25. The

each of which is provided on two of its opposite sides with a central projecting lug 28 and two parallel'grooves 29 and 30 adjacent' to each side of said lug. For convenience of illustration, interlocking blocks 27 are not shown in connection with the cross rails 22 and 23, but it is to be understood that such interlocking blocks are to be used at each end of such cross rails. These blocks are arranged so that the right-angle flanges of the cross rails and stiles engage with the slots 29 and 30 formed in the blocks.

To strengthen the structure of the door and to close the upper and lower ends of the stiles 19 and 20, I provide crossbars 31, 31'

which extend across the' top and bottom of i the door and just inside the top and bottom cross-rails. The material at the upper'and' lower ends of the stiles 19 and is preferably folded in at right'angles, as shown in .Fig. 1, and secured to said crossbars 31,

20 preferably by means of fiat-headed machine screws. 32 are locking strips which are drivenin between the outer surfaces of each.

after the cross rails andstiles have been set in position on thepanel's. After the-lock Strips have been driven in place, all that remains to be done is to rivet down the projecting lugs-28 of the interlocking blocks 27 35 which is accomplished, preferably by the use "of a drop hammer; When these projections have been riveted down, the rightangle flanges formed'on the cross rails and stiles will be securely locked within the 40 slots formed in the interlocking blocks and thus firmly and securely hold the door parts together.

In the modified form shown in Fig. 5, the cross rail or stile 33 is formed at its inner edge with the desired molding or ornamentation 84,as in the other form, but is also provided with a rectangular channel 35 ex tending from the molding 3%.. These channels 35 are preferably made by bending the inner edges of the material outwardly, downwardly and then inwardly in the form 01 a return bend. In this form, the locking strips 36 are disposed in the channels 35 in the stile. and cross rails and into the slots 16 beneath the prongs 15 of the clamp hooks. The locking strips in this modification are driven in from the inside of the stiles or cross rails. In this form, as in the other, the locking strip when driven in place securely locks the parts together.

Obviously, many modifications of thedetails herein shown and described may be made without departing from the spirit of my invention or the scope of the appended claims, and I do not wish to be limited to the exact embodiment herein shown and described.

Having thus described my invention, what I claim is:

1. A metal panel structure of the chziracter described comprising pan'el plates, stiles, cross rails, said stiles and cross rails being formed with moldings integral there, with, each of said panel plates having a plurality of registering slots, means engag ing the slots for holding said panel plates together and in spaced relation to each other and means for locking said parts together comprising clamp hooks, each provided with separator lugs disposed be sen said plates so and a clamp extending beyond the edge of said plates.

2. A metal panel structure of the character described comprising panel plates, stiles, cross'rails, said stiles and cross rails being 35 formed with moldings integral therewith, each of said panel plates having a plurality of registering slots, means engaging the slots' for holding said panel plates together and in spaced relation to each other and means for locking said parts together comprising clamp hooks, each provided with separator lugs disposed between said plates and a U-shaped clamp extending beyond the edge of said plates.

3. A metal panel structure of the character described comprising panel plates, stiles, cross rails, said stiles and cross rails being 'formed with moldings integral therewith, each of said panel plates having a plurality of registering slots, clamp hooks provided on each side with clamp prongs, said prongs projecting through each pair of the registering slots in said panel plates, the inside molded edges of said cross rails and stiles being disposed over the prongs of said clamp hooks and engaged with said panel plates and locking strips engaging the inside edges of said cross rails and stiles and the prongs of said hooks.

4. A metal panel structure of the character described comprising panel plates, stiles, cross rails, said stiles and cross rails being formed with moldings integral therewith, each of said panel plates having a plurality of registering slots, clamp hooks provided on each side with clamp prongs, said prongs projecting through each pair of the registering slots in said panel plates, the, inside molded edges of said cross rails and stiles being disposed over the prongs of said clamp hooks and engaged with said panel plates, and locking strips engaging the inside edges of said cross rails and stiles, the prongs of said hooks and said'panel plates.

5. A metal panel structure of the character described comprising panel plates, stiles,

cross rails, said stiles and said cross rails being formed. with moldings integral therewith, edged portions extending inwardly from said moldings'and being parallel to the sides of said stiles and cross rails, each of said panel plates having a plurality of registering slots, clamp hooks provided on each side with clamp prongs, said prongs projecting through each pair of registering slots in said panel plates, the molding on said cross rails and stiles being disposed over the prongs of said clamp hooks, and

said edge portions being beneath said prongs, a locking strip disposed between the outside surfaces of said plates and the inside surfaces of said edged portions, whereby the parts are locked together.

' 6. A metal panel structure of the charac ter described comprising panel plates, stiles, cross rails, said stiles and said cross rails being' formed with moldings integral therewith, edged portions extending inwardly from said moldings and being parallel to the sides of said stiles and cross rails, each of said panel plates having a plurality of registering slots, clamp hooks-provided on each side with clamp prongs, said prongs 25 projecting through each pair of registering slots in saidpanel plates, the molding on said cross rails and stiles being disposed over the prongs of said clamp hooks, andlocking strips disposed between said clamp prongs, 30

PETER EDWARD HEGSTEDT.

Witnesses! A. Hnosrnor,

Vroron SWANSON. 

